<template>
  <div>
    <el-upload
      :action="uploadUrl"
      :before-upload="handleBeforeUpload"
      :on-success="handleUploadSuccess"
      :on-error="handleUploadError"
      name="file"
      :show-file-list="false"
      :headers="headers"
      style="display: none"
      ref="upload"
      v-if="this.type == 'url'"
    >
    </el-upload>
    <div id="toolbar" slot="toolbar">
      <!-- Add some buttons -->
      <!-- <button class="ql-bold" title="加粗"></button> -->
      <span class="ql-formats">
        <select class="ql-font"></select>
        <select class="ql-size"></select>
      </span>
      <span class="ql-formats">
        <button class="ql-bold"></button>
        <button class="ql-italic"></button>
        <button class="ql-underline"></button>
        <button class="ql-strike"></button>
      </span>
      <span class="ql-formats">
        <select class="ql-color"></select>
        <select class="ql-background"></select>
      </span>
      <span class="ql-formats">
        <button class="ql-script" value="sub"></button>
        <button class="ql-script" value="super"></button>
      </span>
      <span class="ql-formats">
        <button class="ql-header" value="1"></button>
        <button class="ql-header" value="2"></button>
        <button class="ql-blockquote"></button>
        <button class="ql-code-block"></button>
      </span>
      <span class="ql-formats">
        <button class="ql-list" value="ordered"></button>
        <button class="ql-list" value="bullet"></button>
        <button class="ql-indent" value="-1"></button>
        <button class="ql-indent" value="+1"></button>
      </span>
      <span class="ql-formats">
        <button class="ql-direction" value="rtl"></button>
        <select class="ql-align"></select>
      </span>
      <span class="ql-formats">
        <button class="ql-link"></button>
        <button class="ql-image"></button>
        <button class="ql-video"></button>
        <button class="ql-formula"></button>
      </span>
      <span class="ql-formats">
        <!-- Add a 135 button -->
        <!-- <button id="custom-button-135" title="135编辑器" @click="showModal2"></button> -->
      </span>
    </div>
    <div class="editor" ref="editor" :style="styles"></div>

    <el-dialog title="135编辑器" :visible.sync="visible2" append-to-body>
      <div v-if="visible2">
        <iframe
          src="./html/135EditorDialogPage.html"
          frameborder="0"
          width="100%"
          :height="fullheight - 150 + 'px'"
          id="xiumiIframe"
        ></iframe>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import Quill from "quill";
import "quill/dist/quill.core.css";
import "quill/dist/quill.snow.css";
import "quill/dist/quill.bubble.css";
import { getToken } from "@/utils/auth";
import blotSelect from "./blot";
blotSelect(Quill);
export default {
  name: "Editor",
  props: {
    /* 编辑器的内容 */
    value: {
      type: String,
      default: "",
    },
    /* 高度 */
    height: {
      type: Number,
      default: null,
    },
    /* 最小高度 */
    minHeight: {
      type: Number,
      default: null,
    },
    /* 只读 */
    readOnly: {
      type: Boolean,
      default: false,
    },
    // 上传文件大小限制(MB)
    fileSize: {
      type: Number,
      default: 5,
    },
    /* 类型（base64格式、url格式） */
    type: {
      type: String,
      default: "url",
    },
  },
  data() {
    return {
      visible2: false,
      selection: {}, // 光标位置
      fullheight: document.documentElement.clientHeight, // 给quill容器设置了个高度
      uploadUrl: process.env.VUE_APP_BASE_API + "/api/common/upload", // 上传的图片服务器地址
      headers: {
        Authorization: "Bearer " + getToken(),
      },
      Quill: null,
      currentValue: "",
      options: {
        theme: "snow",
        bounds: document.body,
        debug: "warn",
        modules: {
          // 工具栏配置
          toolbar: "#toolbar",
        },

        placeholder: "请输入内容",
        readOnly: this.readOnly,
      },
    };
  },
  computed: {
    styles() {
      const style = {};
      if (this.minHeight) {
        style.minHeight = `${this.minHeight}px`;
      }
      if (this.height) {
        style.height = `${this.height}px`;
      }
      return style;
    },
  },
  watch: {
    value: {
      handler(val) {
        if (val !== this.currentValue) {
          this.currentValue = val === null ? "" : val;
          if (this.Quill) {
            this.Quill.pasteHTML(this.currentValue);
          }
        }
      },
      immediate: true,
    },
  },
  mounted() {
    this.init();
    // 暴露方法绑定到window上，给public\pluging\xiumi-ue-dialog-v5.html使用
    window.setRichText = this.setRichText;
    // 调用135页面的时候 带入数据 getHtml()
    window.getHtml = this.getHtml;
  },
  beforeDestroy() {
    this.Quill = null;
  },
  methods: {
    init() {
      const editor = this.$refs.editor;
      this.Quill = new Quill(editor, this.options);
      window.addEventListener(
        "message",
        function (event) {
          if (typeof event.data !== "string") return; // 增加此行代码
          this.currentValue = event.data
          let originNode = new DOMParser().parseFromString(event.data, "text/html")
            .body.childNodes;
          this.nodesInQuill(originNode);
          dialog.close();
        },
        false
      );
      // 如果设置了上传地址则自定义图片上传事件
      if (this.type == "url") {
        const toolbar = this.Quill.getModule("toolbar");
        toolbar.addHandler("image", (value) => {
          this.uploadType = "image";
          if (value) {
            this.$refs.upload.$children[0].$refs.input.click();
          } else {
            this.Quill.format("image", false);
          }
        });
      }
      this.Quill.pasteHTML(this.currentValue);
      this.Quill.on("text-change", (delta, oldDelta, source) => {
        // const html = this.$refs.editor.children[0].innerHTML;
        // const text = this.Quill.getText();
        // const quill = this.Quill;
        // this.currentValue = html;
        // this.$emit("input", html);
        // this.$emit("on-change", { html, text, quill });
        this.emitChange();
        this.selection = this.Quill.getSelection();
      });
      this.Quill.on("text-change", (delta, oldDelta, source) => {
        this.$emit("on-text-change", delta, oldDelta, source);
      });
      this.Quill.on("selection-change", (range, oldRange, source) => {
        this.selection = this.Quill.getSelection();
        if (!range) {
          this.$emit("blur", this.Quill);
        } else {
          this.$emit("focus", this.Quill);
        }
        this.$emit("on-selection-change", range, oldRange, source);
      });
      this.Quill.on("editor-change", (eventName, ...args) => {
        this.$emit("on-editor-change", eventName, ...args);
      });
      // 插入内容
      this.firstSetHtml();
      // 粘贴板监听
      this.listenPaste();
      this.$emit("ready", this.Quill);
    },
    // 回显内容时检查秀米代码
    firstSetHtml() {
      // value 为回显内容
      if (this.currentValue) {
        // 判断是否有秀米和或135元素
        if (
          this.currentValue.indexOf("xiumi.us") > -1 ||
          this.currentValue.indexOf("135editor.com") > -1
        ) {
          let originNode = new DOMParser().parseFromString(this.currentValue, "text/html")
            .body.childNodes;
          this.nodesInQuill(originNode);
        } else {
          // 正常插入
          this.Quill.clipboard.dangerouslyPasteHTML(this.currentValue);
        }
      }
    },
    // 根据node类型分发处理
    nodesInQuill(originNode) {
      for (let i = originNode.length - 1; i >= 0; i--) {
        if (originNode[i].localName === "section") {
          // 秀米类型代码，走新blot
          this.setRichText(originNode[i].outerHTML, 0);
        } else {
          // 正常插入
          this.Quill.clipboard.dangerouslyPasteHTML(0, originNode[i].outerHTML);
        }
      }
    },
    // 监听粘贴板
    listenPaste() {
      this.Quill.root.addEventListener("paste", (e) => {
        let msg = (e.clipboardData || window.clipboardData).getData("text/html"); // 获取粘贴板文本
        if (msg) {
          if (msg.indexOf("xiumi.us") > -1 || msg.indexOf("_135editor") > -1) {
            let value = new DOMParser().parseFromString(msg, "text/html").body.childNodes; // 获取nodes
            console.log(value);
            e.preventDefault(); // 阻止复制动作
            e.stopPropagation(); // 阻止冒泡
            this.nodesInQuill(value); // 根据不同标签，使用不同的插入方法
          }
        }
      });
    },
    // 更新text-change
    emitChange() {
      // 获取到quill 根dom中的html
      let html = this.$refs.editor.children[0].innerHTML;
      const quill = this.Quill;
      const text = this.Quill.getText();
      if (html === "<p><br></p>") html = "";
      // v-model相关
      this.$emit("input", html);
      this.$emit("change", { html, text, quill });
      // 返回quill中文本长度
      // bug注意：这个方法无法计算秀米代码的中的文字长度！
      this.$emit("getConetntLength", this.Quill.getLength());
    },
    setRichText(e, t) {
      // 插入位置
      const index = this.selection ? this.selection.index : 0;
      // 插入数据方法（位置，blot，数据）
      this.Quill.insertEmbed(t || index, "AppPanelEmbed", e);
      // 插入成功后，不管有没有用到a-modal，设置为false就对了
      this.visible2 = false;
    },
    // 秀米 modal
    showModal() {
      this.visible = true;
    },
    // 135 modal
    showModal2() {
      this.visible2 = true;
    },
    // 获取html内容
    getHtml() {
      return this.$refs.editor.children[0].innerHTML;
    },
    // 上传前校检格式和大小
    handleBeforeUpload(file) {
      // 校检文件大小
      if (this.fileSize) {
        const isLt = file.size / 1024 / 1024 < this.fileSize;
        if (!isLt) {
          this.$message.error(`上传文件大小不能超过 ${this.fileSize} MB!`);
          return false;
        }
      }
      return true;
    },
    handleUploadSuccess(res, file) {
      // 获取富文本组件实例
      const quill = this.Quill;
      // 如果上传成功
      if (res.code == 200) {
        console.log(res);
        // 获取光标所在位置
        const length = quill.getSelection().index;
        // 插入图片  res.url为服务器返回的图片地址
        quill.insertEmbed(length, "image", res.url);
        // 调整光标到最后
        quill.setSelection(length + 1);
      } else {
        this.$message.error("图片插入失败");
      }
    },
    handleUploadError() {
      this.$message.error("图片插入失败");
    },
  },
};
</script>

<style>
.editor,
.ql-toolbar {
  white-space: pre-wrap !important;
  line-height: normal !important;
}
.quill-img {
  display: none;
}
.ql-snow .ql-tooltip[data-mode="link"]::before {
  content: "请输入链接地址:";
}
.ql-snow .ql-tooltip.ql-editing a.ql-action::after {
  border-right: 0px;
  content: "保存";
  padding-right: 0px;
}

.ql-snow .ql-tooltip[data-mode="video"]::before {
  content: "请输入视频地址:";
}

.ql-snow .ql-picker.ql-size .ql-picker-label::before,
.ql-snow .ql-picker.ql-size .ql-picker-item::before {
  content: "14px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="small"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="small"]::before {
  content: "10px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="large"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="large"]::before {
  content: "18px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="huge"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="huge"]::before {
  content: "32px";
}

.ql-snow .ql-picker.ql-header .ql-picker-label::before,
.ql-snow .ql-picker.ql-header .ql-picker-item::before {
  content: "文本";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="1"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="1"]::before {
  content: "标题1";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="2"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="2"]::before {
  content: "标题2";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="3"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="3"]::before {
  content: "标题3";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="4"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="4"]::before {
  content: "标题4";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="5"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="5"]::before {
  content: "标题5";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="6"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="6"]::before {
  content: "标题6";
}

.ql-snow .ql-picker.ql-font .ql-picker-label::before,
.ql-snow .ql-picker.ql-font .ql-picker-item::before {
  content: "标准字体";
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="serif"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="serif"]::before {
  content: "衬线字体";
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="monospace"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="monospace"]::before {
  content: "等宽字体";
}
</style>
